U.S. patent application number 13/020444 was filed with the patent office on 2012-08-09 for high-order harmonic device of cavity filter.
Invention is credited to Wei-Chin Hsu, Chien-Chih LEE, Hsien-Wen Liu.
Application Number | 20120200374 13/020444 |
Document ID | / |
Family ID | 46600265 |
Filed Date | 2012-08-09 |
United States Patent
Application |
20120200374 |
Kind Code |
A1 |
LEE; Chien-Chih ; et
al. |
August 9, 2012 |
HIGH-ORDER HARMONIC DEVICE OF CAVITY FILTER
Abstract
A high-order harmonic device of a cavity filter including a base
and a lid cover the base is disclosed. The base has a through
groove connecting to an upper and a lower portion. The base has a
plurality of output terminal with metallic conductor extending into
the inner side formed on the surface of the sidewall. The base has
resonance space formed indented to receive the metallic conductor
and extending to connect to the through groove. The lid has a
plurality of threading holes formed corresponding to chambers and
partitions received with adjusting elements for height adjustment.
The adjusting elements has the resonance bars corresponding to
every chamber and the suppressing bars corresponding to every
partition. By adjusting suppressing bar and the partition to a
predetermined distance, the space of the channel for transmitting
the high-order harmonic wave can be reduced to suppress noise
produced by high-order harmonic wave.
Inventors: |
LEE; Chien-Chih; (Keelung
City, TW) ; Hsu; Wei-Chin; (Keelung City, TW)
; Liu; Hsien-Wen; (Keelung City, TW) |
Family ID: |
46600265 |
Appl. No.: |
13/020444 |
Filed: |
February 3, 2011 |
Current U.S.
Class: |
333/203 |
Current CPC
Class: |
H01P 1/2053 20130101;
H01P 7/04 20130101; H01P 1/205 20130101 |
Class at
Publication: |
333/203 |
International
Class: |
H01P 1/205 20060101
H01P001/205 |
Claims
1. A high-order harmonic device of a cavity filter, comprising a
base and a lid covering said base; wherein said base comprises a
through groove connecting an upper and a lower portion; said base
has a plurality of output terminals on a surface of sidewall, said
output terminals has a metallic conductor extending into said base;
said base has a resonance space formed indented and bent providing
said metallic conductor to reach in and connect to said through
groove; said resonance space comprises a plurality of chambers; a
partition having channel formed above is formed on sidewalls of two
adjacent chambers; said lid has a plurality of threading holes with
female thread formed corresponding to every chamber and every
partition; every threading hole provides to thread with adjusting
element with male thread for a height adjustment; said plurality of
adjusting elements respectively comprise a suppressing bar
positioned corresponding to said resonance bar of said every
chamber and said every partition in order to reduce spaces for said
high-order harmonic wave to transmit signals; said every resonance
bar and said every suppressing bar has a certain distance from a
bottom side of said chamber and every partition.
2. A high-order harmonic device of a cavity filter according to
claim 1, wherein said plurality of chamber of said base
respectively comprise a protruded resonant on said bottom side;
every resonant has a groove downwardly formed indented on a top
side for said resonance bar to reach in.
3. A high-order harmonic device of a cavity filter according to
claim 1, wherein said every partition of said base further has a
groove downwardly formed indented on a top side for said
suppressing bar to reach within.
4. A high-order harmonic device of a cavity filter according to
claim 1, wherein said every resonance bar and said every
suppressing bar of said plurality of adjusting element of said lid
has a distal end extending out from said lid with a bolt.
5. A high-order harmonic device of a cavity filter according to
claim 1, wherein said every resonance bar and said every
suppressing bar of said plurality of adjusting element of said lid
has a distal end extending out from said lid with a nut.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a high-order harmonic
device of a cavity filter. More particularly to a high-order
harmonic device having a partition with a channel formed above
connecting to adjacent cavities on the base, and a lid penetrated
with a plurality of suppressing adjusting bars positioned facing
the partitions. The partitions and the suppressing adjusting bars
can suppress the space for transmitting signals by the high-order
harmonic wave, and thereby suppress noise produced by the
high-order harmonic wave in order to have signals more clearly and
less distorted.
[0003] 2. Description of the Related Art
[0004] The wireless communication is essential in the modern
communication industry, for instance, in the broadcasting, wireless
phone, mobile phone, Bluetooth, global positioning system (GPS),
wireless network etc, wireless communication is applied everywhere
in our daily life. The antenna technology plays a key role in the
wireless communication, particularly for the long distance
microwave communication of which involved even broader.
[0005] The antenna couples the electromagnetic wave in the air to
convert it into the current signal and further transmits it to the
devices connected at the primal end. In the process of coupling,
the frequency response of the filter is very important; the good
frequency response upgrades the sensitivity of coupling and
providing precision for operating in the working bandwidth, and
further filters the noise for playing the signal clearly.
[0006] Referring to FIG. 6, an input slot A1 is penetrated through
the base A of the filter, and the base A has a resonance chamber A2
connecting to the input slot A1 and a plurality of chambers A21
conjunct to each other. The resonance chamber A2 has output ends A3
extending from the external sidewall to the inner portion at the
two distal ends apart from the input slot A1. A lid B is positioned
on the base A, and the lid B has a plurality of conducting bars B1
formed on the lower surface thereof to extend into every chamber
A21. The frequency response conducted by the chambers A21 and the
conducting bars B1 can upgrade the sensitivity while coupling.
[0007] However, with the increased territory and products of the
wireless signal, and the bandwidth of the wireless signal and the
wireless signals transmitted in the air is also increased, the
interference between wireless signals in the air is becoming more
severe (referring to FIG. 7) and the received signals can be
invalid due to the unclearness and distortion.
[0008] Therefore, how to solve the above described defect is the
priority issue for the manufacturers in the field.
SUMMARY OF THE INVENTION
[0009] The present invention has been accomplished under the
circumstances in view. It is therefore the main object of the
present invention to provide a high-order harmonic device of a
cavity filter.
[0010] According to an aspect of the present invention, a partition
with a channel is formed above connecting to adjacent cavities on
the base, and a lid is penetrated with a plurality of suppressing
adjusting bars of which positioning facing the partitions; the
partitions and the suppressing adjusting bars can suppress the
space for transmitting signals by the high-order harmonic wave, and
thus suppress the noise produced by the high-order harmonic wave in
order to have signals more clearly and less distorted.
[0011] The other aspect of the present invention is to have a space
formed indented in the bottom of the top face of the partition.
While having the lid covering the top surface of the base, every
suppressing bar does not contact the partition during adjustment,
thus prevent ineffective filtration caused by the contact between
the suppressing bar and the partition. Because the repeated
adjustment on the suppressing bar is not necessary, the adjustment
can be easy with less time consumption.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is an elevational view according to a preferred
embodiment of the present invention.
[0013] FIG. 2 is an exploded view according to a preferred
embodiment of the present invention.
[0014] FIG. 3 is an elevational view of the base according to
another preferred embodiment of the present invention.
[0015] FIG. 4 is an elevational view of the base according to
another preferred embodiment of the present invention.
[0016] FIG. 5 is a noise measurement chart according to the present
invention.
[0017] FIG. 6 is an exploded view according to a conventional
invention art.
[0018] FIG. 7 is a noise measurement chart according to the present
invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0019] FIGS. 1, 2, 3 and 4 are an elevational, an exploded view, an
elevational view and an elevational view of the base according to a
preferred embodiment of the present invention. The high-order
harmonic device of a cavity filter comprises a base 1 and a lid 2
covering the base 1.
[0020] The base 1 has a through groove 11 connecting the upper and
the lower portion of the base 1, and a plurality of output
terminals 12 positioned on the sidewall of the base 1. The output
terminals 12 have metallic conductor 121, and the base 1 has a
resonance space 13 formed indented for fitting the metallic
conductor 121 and extend in a bent fashion go connect to the
through groove 11. The resonance space 13 has a plurality of
connected chambers 131 having resonant 132 protruding at the bottom
side, and of every chamber 132 has a groove 1321 from the indented
downwardly extending from the top side thereof. Each adjacent
chamber 131 has a partition 133 forming a channel 14 between the
two sidewalls of the adjacent chambers 131.
[0021] The lid 2 has a plurality of threading holes 21 having
female thread formed respectively corresponding to the positions of
the groove 1321 of every resonant 132 and every partition 133, and
the threading holes 21 receive adjusting elements 22 with male
thread for adjusting upper and lower positions; the plurality of
adjusting elements 22 respectively have the resonance bar 221
corresponding to the groove 1321 and the suppressing adjusting bar
222 corresponding to the partitions 133.
[0022] Referring to FIGS. 1, 2, 3 and 4, to assemble the elements
of the present invention, place the lid 2 onto the base 1 and allow
the plurality of resonance bars 221 of the lid 2 extend
respectively into the groove 1321 of every resonance 132; to
position the plurality of suppressing adjusting bars 222
respectively to correspond the position of each partition 133. When
the height of the resonance bar 221 is adjusted, the area at the
bottom of the groove 1321 and the resonance bar 221 is altered
accordingly; when the resonance bar 221 is descending the coupling
volume of the electromagnetic is gradually decreasing accordingly;
when the resonance bar is ascending, the coupling volume of the
electromagnetic is gradually increasing accordingly, thus to adjust
the coupling volume of the electromagnetic between the plurality of
resonant 132 in order to operate precisely within the working
bandwidth.
[0023] Furthermore, the suppressing bar 222 and the partitions 133
are adjusted to a certain distance to reduce the space of the
channel 14 for the high-order harmonic wave to transmit the signal
to suppress the high-order harmonic wave (referring to FIG. 5. The
high-order harmonic wave noise is produced during the signal
transmission and the above method can substantially filter the
noise after receiving the signals to maintain the signal more
clearly and less distortion.
[0024] Referring to FIGS. 2 and 4, the partition 133 may further
comprise a space 1331 indented downwards on the top side for the
suppressing bar 222 to reach there-within. When the lid 2 covers
the base 1 without showing the positions of the suppressing bars
222, the contact between the suppressing bars 222 and the
corresponding partitions 133 can be avoided to prevent the problem
of not being able to filter. Because the positions of the
suppressing bars 222 need not be adjusted repeatedly, therefore, it
can be more convenient, prompt and less time consuming while
adjusting the suppressing bars 222.
[0025] Referring to FIGS. 2, 3 and 4 the plurality of chambers 131
of the base 1 can be formed in a shape of a circle, a rectangle or
a polygon, and the plurality of chambers 131 can connect to one or
two sides of the through groove 11. The chambers 131 can be either
with or without the resonant 132. The resonant 132 is merely for
providing the better precision for adjusting the electromagnetic
coupling volume. Furthermore, the output terminals 12 can also
position on a sidewall or two sidewalls of the base 1. The above
description is used merely for demonstrating the embodiment, not
for limiting the scope of the present invention. Any structural or
illustrational alteration shall be construed to be within the scope
of the present invention.
[0026] Referring to FIGS. 1 and 2, the plurality of adjustment
elements 22 comprise resonance bars 221 and suppressing bars 222 to
extend out of the top side of the lid 2 with the bolt 223, and the
resonance bars 221 and the suppressing bars 222 extend out of the
top side of the lid 2 with nuts 224. Thus, after placing the lid 2
onto the base 1, the resonance bars 221 and the suppressing bars
222 can be adjusted directly by hand of the hand tool for the
various heights. The above description is used for merely
demonstrating the embodiment, and not for limiting the scope of the
present invention. Any structural or illustrational alteration
shall be construed within the claim of the present invention.
[0027] The high-order harmonic device of the cavity filter of the
present invention is more advantageous than the conventional art,
for example:
[0028] The two connecting sidewalls of the adjacent chambers 131 of
the base 1 are connected to the partitions of which having channel
formed above, and the lid 2 has a plurality of suppressing bars 222
facing every partition 133; by adjusting every suppressing bar 222
and the partition 133 to a predetermined distance the space of the
channel 14 for transmitting the high-order harmonic wave can be
reduced to substantially suppress the noise produced by the
high-order harmonic wave.
[0029] The partition 133 can have the downwardly indented space
1331 on the top side to keep every suppressing bar 222 away from
the partition 133 after placing the lid 2 onto the base 1 while
adjusting, and thereby obtain the filtration effect.
[0030] The high-order harmonic device of the cavity filter of the
present invention has partitions 133 with a channel 14 formed above
connecting to adjacent cavities on the base 1, and a lid 2
penetrated with a plurality of suppressing bars 222 of which
positioning facing the partitions 133; the partitions 133 and the
suppressing bars 222 can suppress the space for transmitting
signals by the high-order harmonic wave, and thereby suppress the
noise produced by the high-order harmonic wave in order to have
signals more clearly and less distortion.
[0031] While the invention has been described in conjunction with a
specific best mode, it is to be understood that many alternatives,
modifications, and variations will be apparent to those skilled in
the art in light of the foregoing description. Accordingly, it is
intended to embrace all such alternatives, modifications, and
variations in which fall within the spirit and scope of the
included claims. All matters set forth herein or shown in the
accompanying drawings are to be interpreted in an illustrative and
non-limiting sense.
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